[patch] Fix dangling displays in separate debug

[Jan Kratochvil]

On Wed, 07 Apr 2010 21:24:54 +0200, Tom Tromey wrote:
> >>>>> "Jan" == Jan Kratochvil <jan.kratochvil@redhat.com> writes:
> Jan> -	  if (SYMBOL_SYMTAB (symbol)->objfile == solib->objfile)
> Jan> +	  if (SYMBOL_SYMTAB (symbol)->objfile == solib->objfile
> Jan> +	      || SYMBOL_SYMTAB (symbol)->objfile
> Jan> +		 == solib->objfile->separate_debug_objfile)
> 
> An objfile can now have multiple separate debuginfo objfiles, linked
> using separate_debug_objfile_link.

Yes, I agree, forgot...


> So, I think this test should actually be:
> 
> 	  if (SYMBOL_SYMTAB (symbol)->objfile == solib->objfile
> 	      || SYMBOL_SYMTAB (symbol)->objfile->separate_debug_objfile_backlink
> 		 == solib->objfile)
> 
> What do you think?

Unaware how to improve it more.

No regressions on {x86_64,x86_64-m32,i686}-fedora12-linux-gnu.

OK to check-in?


Thanks,
Jan


gdb/
2010-04-03  Jan Kratochvil  <jan.kratochvil@redhat.com>
	    Tom Tromey  <tromey@redhat.com>

	* printcmd.c (display_uses_solib_p): Check also
	SEPARATE_DEBUG_OBJFILE_BACKLINK.  New variable symbol_objfile.

gdb/testsuite/
2010-04-03  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* gdb.base/solib-display.exp (split solib): New.

--- a/gdb/printcmd.c
+++ b/gdb/printcmd.c
@@ -1888,6 +1888,7 @@ display_uses_solib_p (const struct display *d,
 	{
 	  const struct block *const block = elts[i + 1].block;
 	  const struct symbol *const symbol = elts[i + 2].symbol;
+	  struct objfile *symbol_objfile;
 
 	  if (block != NULL
 	      && solib_contains_address_p (solib,
@@ -1895,7 +1896,10 @@ display_uses_solib_p (const struct display *d,
 	    return 1;
 
 	  /* SYMBOL_OBJ_SECTION (symbol) may be NULL.  */
-	  if (SYMBOL_SYMTAB (symbol)->objfile == solib->objfile)
+	  symbol_objfile = SYMBOL_SYMTAB (symbol)->objfile;
+	  if (symbol_objfile == solib->objfile
+	      || symbol_objfile->separate_debug_objfile_backlink
+		 == solib->objfile)
 	    return 1;
 	}
       endpos -= oplen;
--- a/gdb/testsuite/gdb.base/solib-display.exp
+++ b/gdb/testsuite/gdb.base/solib-display.exp
@@ -53,6 +53,13 @@ if { [gdb_compile_shlib ${srcfile_lib} ${binfile_lib} $lib_flags] != ""
   return -1
 }
 
+set test "split solib"
+if {[gdb_gnu_strip_debug $binfile_lib] != 0} {
+    fail $test
+} else {
+    pass $test
+}
+
 gdb_exit
 gdb_start
 gdb_reinitialize_dir $srcdir/$subdir